netlify build error 2

10:08:09 PM: Waiting to build. Currently running 1 concurrent builds on your account
10:08:09 PM: Build ready to start
10:08:11 PM: build-image version: 9e0f207a27642d0115b1ca97cd5e8cebbe492f63
10:08:11 PM: build-image tag: v3.3.2
10:08:11 PM: buildbot version: c78d626072f493c5e920f1da6e930a88f3a7d230
10:08:11 PM: Fetching cached dependencies
10:08:11 PM: Starting to download cache of 255.0KB
10:08:11 PM: Finished downloading cache in 528.108314ms
10:08:11 PM: Starting to extract cache
10:08:11 PM: Failed to fetch cache, continuing with build
10:08:11 PM: Starting to prepare the repo for build
10:08:12 PM: No cached dependencies found. Cloning fresh repo
10:08:12 PM: git clone git@github.com:kocheck/successful-ish-podcast
10:08:13 PM: Preparing Git Reference refs/heads/master
10:08:13 PM: Starting build script
10:08:14 PM: Installing dependencies
10:08:15 PM: Downloading and installing node v10.16.3...
10:08:16 PM: Downloading https://nodejs.org/dist/v10.16.3/node-v10.16.3-linux-x64.tar.xz...
10:08:16 PM: 
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10:08:16 PM:    13.0%
10:08:16 PM: 
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10:08:16 PM: 
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10:08:16 PM: ###### 100.0%
10:08:16 PM: Computing checksum with sha256sum
10:08:16 PM: Checksums matched!
10:08:19 PM: Now using node v10.16.3 (npm v6.9.0)
10:08:20 PM: Attempting ruby version 2.6.2, read from environment
10:08:21 PM: Using ruby version 2.6.2
10:08:22 PM: Using PHP version 5.6
10:08:22 PM: Started restoring cached node modules
10:08:22 PM: Finished restoring cached node modules
10:08:22 PM: Installing NPM modules using NPM version 6.9.0
10:09:03 PM: > sharp@0.23.0 install /opt/build/repo/node_modules/sharp
10:09:03 PM: > (node install/libvips && node install/dll-copy && prebuild-install) || (node-gyp rebuild && node install/dll-copy)
10:09:04 PM: info
10:09:04 PM: sharp
10:09:04 PM:  Downloading https://github.com/lovell/sharp-libvips/releases/download/v8.8.1/libvips-8.8.1-linux-x64.tar.gz
10:09:07 PM: > core-js@2.6.9 postinstall /opt/build/repo/node_modules/core-js
10:09:07 PM: > node scripts/postinstall || echo "ignore"
10:09:07 PM: Thank you for using core-js ( https://github.com/zloirock/core-js ) for polyfilling JavaScript standard library!
10:09:07 PM: The project needs your help! Please consider supporting of core-js on Open Collective or Patreon: 
10:09:07 PM: > https://opencollective.com/core-js 
10:09:07 PM: > https://www.patreon.com/zloirock 
10:09:07 PM: Also, the author of core-js ( https://github.com/zloirock ) is looking for a good job -)
10:09:07 PM: > cwebp-bin@5.1.0 postinstall /opt/build/repo/node_modules/cwebp-bin
10:09:07 PM: > node lib/install.js
10:09:08 PM:   ✔ cwebp pre-build test passed successfully
10:09:08 PM: > mozjpeg@6.0.1 postinstall /opt/build/repo/node_modules/mozjpeg
10:09:08 PM: > node lib/install.js
10:09:08 PM:   ✔ mozjpeg pre-build test passed successfully
10:09:08 PM: > pngquant-bin@5.0.2 postinstall /opt/build/repo/node_modules/pngquant-bin
10:09:08 PM: > node lib/install.js
10:09:09 PM:   ✔ pngquant pre-build test passed successfully
10:09:09 PM: > successful-ish-podcast@1.0.0 postinstall /opt/build/repo
10:09:09 PM: > lerna bootstrap
10:09:10 PM: lerna
10:09:10 PM: notice
10:09:10 PM:  cli v3.16.4
10:09:10 PM: lerna
10:09:10 PM: info ci enabled
10:09:10 PM: lerna
10:09:10 PM:  info Bootstrapping 2 packages
10:09:10 PM: lerna
10:09:10 PM:  info Installing external dependencies
10:09:12 PM: lerna
10:09:12 PM:  ERR! npm ci exited 1 in 'successful-ish-podcast-studio'
10:09:12 PM: lerna
10:09:12 PM: ERR! npm ci stderr:
10:09:12 PM: npm ERR! cipm can only install packages with an existing package-lock.json or npm-shrinkwrap.json with lockfileVersion >= 1. Run an install with npm@5 or later to generate it, then try again.
10:09:12 PM: npm ERR! A complete log of this run can be found in:
10:09:12 PM: npm ERR!     /opt/buildhome/.npm/_logs/2019-09-05T02_09_12_321Z-debug.log
10:09:12 PM: lerna ERR! npm ci exited 1 in 'successful-ish-podcast-studio'
10:09:12 PM: lerna WARN complete Waiting for 1 child process to exit. CTRL-C to exit immediately.
10:09:12 PM: npm
10:09:12 PM:  ERR! code
10:09:12 PM:  ELIFECYCLE
10:09:12 PM: npm ERR! errno
10:09:12 PM: failed during stage 'building site': Build script returned non-zero exit code: 1
10:09:12 PM:  1
10:09:12 PM: npm ERR!
10:09:12 PM:  successful-ish-podcast@1.0.0 postinstall: `lerna bootstrap`
10:09:12 PM: npm ERR! Exit status 1
10:09:12 PM: npm ERR!
10:09:12 PM: npm ERR! Failed at the successful-ish-podcast@1.0.0 postinstall script.
10:09:12 PM: npm
10:09:12 PM:  ERR! This is probably not a problem with npm. There is likely additional logging output above.
10:09:12 PM: npm
10:09:12 PM: ERR! A complete log of this run can be found in:
10:09:12 PM: npm ERR!     /opt/buildhome/.npm/_logs/2019-09-05T02_09_12_435Z-debug.log
10:09:12 PM: Error during NPM install
10:09:12 PM: Error running command: Build script returned non-zero exit code: 1
10:09:12 PM: Failing build: Failed to build site
10:09:12 PM: Finished processing build request in 1m1.467424212s